EP2108790A2 - Ölnebelabscheidevorrichtung mit einem Filtermedium zur Kurbelraumentlüftung. - Google Patents

Ölnebelabscheidevorrichtung mit einem Filtermedium zur Kurbelraumentlüftung. Download PDF

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Publication number
EP2108790A2
EP2108790A2 EP09157605A EP09157605A EP2108790A2 EP 2108790 A2 EP2108790 A2 EP 2108790A2 EP 09157605 A EP09157605 A EP 09157605A EP 09157605 A EP09157605 A EP 09157605A EP 2108790 A2 EP2108790 A2 EP 2108790A2
Authority
EP
European Patent Office
Prior art keywords
oil
plug
separating element
flange
separating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09157605A
Other languages
English (en)
French (fr)
Other versions
EP2108790B1 (de
EP2108790A3 (de
Inventor
Samuel Bonne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sogefi Filtration SA
Original Assignee
Filtrauto SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filtrauto SA filed Critical Filtrauto SA
Publication of EP2108790A2 publication Critical patent/EP2108790A2/de
Publication of EP2108790A3 publication Critical patent/EP2108790A3/de
Application granted granted Critical
Publication of EP2108790B1 publication Critical patent/EP2108790B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/0408—Sump drainage devices, e.g. valves, plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/0458—Lubricant filling and draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/0011—Breather valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M2011/0491—Filing cap with special features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/0011—Breather valves
    • F01M2013/0016—Breather valves with a membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M2013/0038—Layout of crankcase breathing systems
    • F01M2013/005—Layout of crankcase breathing systems having one or more deoilers
    • F01M2013/0055—Layout of crankcase breathing systems having one or more deoilers with a by-pass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase
    • F01M2013/0494—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase using check valves

Definitions

  • the present invention relates to devices for separating elements suspended in a gas from an internal combustion engine casing.
  • the field of application of the invention relates in particular to the separation of liquid crankcase gases in the engines of road vehicles (eg automobiles, trucks, motorcycles), boats or industrial engines (eg generator).
  • the materials issuing from the casing include, on the one hand, a liquid part such as an aerosol whose distribution in number of droplets is centered, for example, around 0.6 ⁇ m and a film of oil deposited on the housing walls, and secondly, a gaseous portion such as fuel vapors, water or oil, and finally a solid portion such as soot suspended in the gas or in the liquid contained in the crankcase.
  • a liquid part such as an aerosol whose distribution in number of droplets is centered, for example, around 0.6 ⁇ m and a film of oil deposited on the housing walls
  • a gaseous portion such as fuel vapors, water or oil
  • a solid portion such as soot suspended in the gas or in the liquid contained in the crankcase.
  • the casing is connected to the air intake of the internal combustion engine via a separation device in order to evacuate continuous these gases; this is more commonly known as the circuit for recycling crankcase gas or blow-by gas by a person skilled in the art.
  • crankcase separation means are employed in the prior art, of which four large families can be distinguished.
  • a first family brings together the chicane systems.
  • a network of baffles is formed of several plates arranged to accelerate and sharply deflect the flow of gas. This results in an agglutination of the oil drops on these plates after impact and therefore de-oiling of the gas.
  • a pressure regulating valve (PRV) is generally placed downstream of the baffles. These systems are usually arranged in the cylinder head cover or in a box attached to the engine. These systems generate little loss of load. However, they are not very effective for the separation of very fine oil aerosols.
  • a second family brings together the cyclone devices.
  • the conical volume into which the gas enters through a tangential inlet allows the acceleration and rotation of the gas. This rotation causes the oil drops to impinge on the walls of the cyclone, while the gaseous phase is evacuated by the outlet provided in the center.
  • These devices are mounted either in a specific box attached to the engine, or in the oil module or in the cylinder head cover. These systems are not very efficient. They become more complex by the addition of progressive opening valves cyclonic cells with the flow of gas. The pressure regulating valve is often superimposed on cyclones.
  • a third family groups the centrifugal separator systems.
  • Such systems include a network of disks or cups rotating about an axis of rotation.
  • the crankcase gases are rotated by the rotation of the system.
  • the oil droplets are expelled radially outwards while the purified gases exit at the center of the separator system.
  • These systems are typically rotated either by an electric motor or by the camshaft or crankshaft, or by a Pelton wheel using the engine oil pressure. They are very efficient separators and generate no or little loss of load. They are placed in a box attached to the engine or integrated into the cylinder block or distribution. The pressure regulating valve is superimposed on the separator or offset.
  • a fourth family groups coalescing filters. These filters include a network of fibers for the capture of fine oil droplets. The oil droplets then gather together to form larger drops capable of sliding by gravity along the media. These filters are typically placed in a housing attached to the engine, in the oil filter module or in the cylinder head cover. They are effective (separation efficiency of 50 to 80%) but can become dirty and generate pressure drop. The pressure regulating valve is often superimposed on the coalescer filter.
  • the present invention aims to overcome one or more of the aforementioned drawbacks by providing a device for filtering elements in suspension in a gas from a crankcase, which is of minimal size and whose filtering part can be replaced.
  • the invention relates to a device for separating elements suspended in a gas coming from an internal combustion engine casing, comprising at least one oil filling chamber comprising an upper end having a central axis of revolution and a lower end, a removable plug piece for closing said upper end, a separating element comprising a filter medium, said oil filling chamber being in communication with the motor housing and further having an outlet for gas evacuation treated, the upper end of said enclosure defining when the cap is removed an oil filling opening for lubricating said engine, said lower end communicating with the oil sump of said engine, characterized in that the separating element is carried by the removable plug, the separating element defining an upstream zone of untreated gases communicating with the crankcase and a downstream zone of treated gases communicating with the outlet orifice, said lower end being on the upstream zone side.
  • the filter media integrates into the filling chamber and is easy to access to allow its replacement or a simple check of its state.
  • the plug which is commonly called oil plug is no longer independent of the crankcase separation system. Observation of the filter medium is systematic at each emptying and filling: this is important to put the user in confidence since we can not predict the life of a filter. In case of clogging or fouling (filter engulfed by a water / oil mixture) it suffices to unlock the cap, typically by a rotational movement.
  • the oil plug has a shape making it easier to grip for loosening. The locking can be achieved by a bayonet or a net.
  • the separating element extends between two flanges and is held completely in the interior volume of the oil filling chamber when the plug closes the oil filling opening.
  • the overall height of the device can be advantageously reduced since the filter media can be interposed inside the oil supply chamber, between the inlet and the outlet of the gas.
  • the insertable portion of the plug can cooperate with the outlet channel of the filtered gases.
  • the fixing elements of the plug are for example configured so that in the closed position, the angular position of the transverse orifice corresponds to that of the outlet orifice.
  • the second portion of the cap comprises at least one peripheral sealing element in contact with the oil filling chamber and sealingly separating the upstream zone and the downstream zone.
  • the oil filling chamber has on the side of said upper end an annular inner rim extending perpendicularly to the central axis, said peripheral sealing element comprising at least one annular flange leaning from waterproof way on the rim.
  • the seal can be obtained by a simple tightening in rotation of the cap to a level higher than that where are provided the cap retaining members (net, bayonet type element, etc.).
  • the cap internally comprises a flexible membrane placed either in a first position in which it allows communication between the inlet orifice and the outlet orifice, in a second position in which it prevents communication between the inlet orifice and the outlet orifice, the stopper comprising in addition, a vent opening for subjecting a first face of the flexible membrane to atmospheric pressure.
  • This flexible membrane thus prevents any excessive depression in the housing, which could cause an air intake from the outside to the housing thus inducing deterioration of the seals disposed between the housing and the engine block.
  • three functions oil filling, crankcase treatment and pressure regulation
  • the downstream zone is located at the upper end of the oil filling chamber, the separating element being made integral in rotation with the cap and being able to move in vertical translation relative to the plug. between a position remote from the plug, in which only the downstream zone communicates with the outlet orifice, and a close position of the plug, in which the crankcase gases present in the oil filling chamber can be evacuated by the outlet port without passing through the filter media.
  • the device thus provides a bypass to the outlet in case of overpressure of the housing or possible overpressure of the upstream zone due to a problem of fouling of the filter medium.
  • the separating element extends between an upper flange connected to the plug and a lower flange which is further from the plug and is integral with an oil collector, the filter media being coalescer of oil. So the drops of oil recovered by coalescence on the downstream side of the filter media can be recovered without being directly discharged into the upstream zone where crankcase gases flow.
  • the oil collector comprises an elastically deformable member for purging the collected oil.
  • the oil can be purged during the stopping of the engine, when the hydrostatic pressure generated by the level of the oil collected overrides the negative pressure difference between upstream and downstream.
  • the oil filling chamber is formed by the cylinder block and the cylinder head cover of the engine.
  • the oil filling chamber is formed by a tubular conduit.
  • the subject of the invention is also a stopper plug for an oil filling line for lubricating an internal combustion engine, intended for a separation device according to the invention.
  • This plug is in section in the form of a T and comprises a flattened grippable portion and an insertable portion on which is fixed the filter media.
  • the stopper can retain a compact outer shape.
  • This form is for example that of a disk facilitating the grip for loosening.
  • the separation element is a filter cartridge adapted for the treatment of crankcase gases which is simple in design and compact.
  • This separating element can be inserted in an oil filling chamber without contact with the side walls of the enclosure and can be easily controlled by simple manipulation of the plug with which it is associated.
  • the separation device 10 separates the liquid and possibly solid parts of certain materials produced by the internal combustion engine and which are directly from the housing.
  • this separating device 10 is disposed in an oil filling chamber in the form of a tubular pipe wall 11 opening at an upper end 11a at an opening 12 for the filling of lubricating oil. of the motor.
  • the separating device 10 can be placed in the CC head cover (as illustrated figure 5 ) or in an oil filling column (as illustrated by the Figures 1 to 4 ).
  • the pipe wall 11 has a inlet port 13 communicating directly via an inlet conduit 14 with the housing (not shown) of the internal combustion engine. It is therefore from this inlet 13 that the untreated crankcase gases arrive.
  • the pipe wall 11 has at its upper part a central axis A corresponding for example to an axis of symmetry of the opening 12.
  • a separating element 15 is provided for extracting crankcase gases from the liquid and solid particles.
  • the separating element 15 comprises a filtering medium 16 which extends between a first flange called upper flange 17 and a second flange called lower flange 18 in the example considered here.
  • the upper flange 17 is supported by a plug 20 for closing the opening 12.
  • the cap may be based on plastic material (s).
  • the separating element 15 delimits an upstream zone Z1 of untreated gases communicating with the inlet orifice 13 and a downstream zone Z2 of treated gases communicating with an outlet orifice S formed in the pipe wall 11.
  • the blow-by gases to be treated may be gases G which come from the high engine part and / or gases G 'which come from the low engine part.
  • the crankcase gases pass through the separating element 15 and emerge purified by the outlet cannula 21 towards the air intake.
  • the outlet cannula 21 In the case of integration into the CC head cover as illustrated in figure 5 there is no inlet pipe 14.
  • the gases G which come from the high motor part are conveyed by the inlet pipe 14, the gases G 'which come from the low motor part go up by a lower entry of the pipe element 11.
  • a specific pipe in connection with the low engine can join the inlet pipe 14.
  • the removable plug 20 has a gripping portion 22 and an insertable portion 23 penetrating into the interior volume of the pipe wall 11.
  • This insertable portion 23 comprises means for fixing the separation element 15.
  • the filter media 16 is thus placed in the extension of the plug 20 and can be removed with the latter.
  • the general shape of the gripping part is flattened to limit the height requirement outside the channel formed by the wall 11.
  • the attachment of the separating element 15 can be made removably as shown in FIG. figure 5 for example, using elastic tabs, clips, screwing system or insertion studs or any other suitable system. In this case only the separating element 15 can be replaced.
  • the separation element 15 may be an integral part of the plug 20.
  • the filtering medium is preferably a coalescer media. It can be rolled up or folded. It is understood that a superimposed and preferably coaxial arrangement of the plug 20 and the filter medium 16 facilitates the complete output of this assembly.
  • the plug 20 has a shoulder 24 or narrowing of similar section such that the outer contour of the gripping portion 22 is greater than the outer contour of the insertable portion 23.
  • a seal 25 may be fixed on the shoulder 24. This seal 25 comes into contact with the periphery of the oil filling opening 12.
  • a transverse bore 26 interposed between the upper flange 17 of the separating member 15 and the shoulder 24. The treated gases of the downstream zone Z2 pass through this drilling 26 then through the outlet port S to then flow to the air intake.
  • the separation between the upstream zone Z1 and the downstream zone Z2 is effected by a peripheral sealing element 30 in contact with the pipe wall 11.
  • This sealing element 30 is placed above the filter medium 16, at the level of the lower end of the plug 20 which is fixed the upper flange 17.
  • annular sealing flange 30 is placed between the plug 20 and the separating element 15 to prevent the passage of gases elsewhere than through the filter medium 16.
  • the flange 30 comes sealingly abut an annular rim 31 projecting or complementary flange towards the inside of the pipe wall 11.
  • this flange 31 extends for example perpendicularly to the central axis A.
  • the flange 31 enters a groove g of the insertable portion 23 formed between the annular flange 30 and the element locking 32.
  • the locking of the stopper can be achieved by means of a bayonet, a net or any other suitable restraint.
  • the collar 30 illustrated in FIG. figure 1 can be replaced by an O-ring T as shown in figure 4 , locally producing a radial seal between the upstream zone Z1 and the downstream zone Z2.
  • the collar 30 can be placed above or below the locking system of the stopper 20.
  • the flange 30 is for example made in the material of the plug 20 or may be made of elastomer overmolded to the plug 20. This improves the seal.
  • the outlet port S of the purified gases GP recovered in the downstream zone Z2 can be made between the collar 30 and the prehensile sealing portion 22 of the plug 20.
  • the outlet orifice S in connection with the outlet cannula 21 is formed in the body of the pipe wall 11 and not in the plug 20.
  • the seal 25 is fixed below the shoulder 4, on the insertable portion 23. This seal 25 comes radially in contact with the inside of the pipe wall 11.
  • the transverse bore 26 is interposed between the seal 25 and flange upper 17 of the separating element 15.
  • the separation between the upstream zone Z1 and the downstream zone Z2 is effected by the upper flange 17 which bears against the annular flange 31.
  • the upper flange 17 has an outside diameter slightly smaller than the diameter of the flange 17. Opening 12 for filling the oil and greater than the outside diameter of the lower flange 18.
  • the lower flange 18 is integral with an oil collector 33 fed via a central opening 34 of the lower flange 18.
  • the oil coalesced on the downstream side of the filter media 16 falls by gravity as illustrated by the arrow H in this collector 33 placed opposite the prehensile sealing portion 22 of the plug 20.
  • the bottom 35 of the collector 33 preferably has a large surface area with, for example, a diameter substantially equal to the outside diameter of the filter medium 16 to increase the oil content without excessive bulk in the axial direction.
  • the manifold 33 has a purge opening 35 closed by an elastic member 40 or a valve.
  • the pressure difference holds the elastic element 40 against the lower surface of the manifold 33.
  • the elastic member 40 moves away from the lower surface of the manifold 33, which allows the oil to flow to the oil sump. engine oil.
  • the elastic element 40 may consist, for example, of a spring blade or similar resilient return member.
  • the shape of the passage defined by the rim 31 may be wider on either side of a median plane.
  • the locking element is constituted in this case by two flange portions each having a shape corresponding to one of the extensions of the passage. This is a bayonet type closure.
  • the shape of the passage defined by the flange 31 is circular.
  • the locking can be obtained by screwing the plug 20 near the outlet of the pipe wall 11. Closing by clipping or snapping the plug 20 can also be achieved.
  • the separation device 10 has the same characteristics as that described above, in addition to the integration of a valve PRV (Pressure Regulation Valve) in the plug 20.
  • This valve can be formed essentially of a flexible membrane 41 which has an outer edge stuck or sealingly attached to the plug 20, so as to separate the downstream zone Z2 from an inner volume 200 of the plug 20 which is subjected to atmospheric pressure by means of a small orifice 42 venting formed in the gripping portion 22 of the plug 20.
  • This vent hole 42 is shown axially but may be placed differently.
  • the plug 20 is for example provided with a groove or circular groove in which is housed the outer edge of the membrane flexible 41.
  • the membrane 41 is biased by a spring 43 which bears on a wall of the bore 26 of the insertable portion 23.
  • the membrane is thus prestressed by this spring 43.
  • the diaphragm 41 moves to its seat 44. This displacement then creates a pressure drop that limits the vacuum upstream of the diaphragm 41.
  • the spring force is determined so that the diaphragm 41 is kept away from the outlet. a conduit 45 adjacent to the adjacent piercing 26.
  • the spring 43 may compress so that the membrane 41 covers the duct 45 and separates the downstream zone Z2 into two sectors: one in depression on the side of the filter media 16 and the other side of the outlet orifice which is then no longer or almost no longer supplied with gas by the separating device 10. A regulation is obtained by the valve thus formed.
  • the gases are discharged through the bore 26 which is in the form of an outlet channel opening between the gripping portion 22 of the plug 20 and the flange 30 sealing between the upstream zone Z1 and the downstream zone Z2.
  • This seal is obtained in the same way as for the example of the figure 1 .
  • the form illustrated in Figure 6A therefore also corresponds to the case of figure 3 .
  • the type of shape illustrated in FIG. Figure 6B can also be applied to a separation device 10 provided with a flexible diaphragm 41 for pressure regulation.
  • the thread lock mode as indicated in the figure 2 or a similar fixation can be used in this case.
  • the separation device 10 has the same functions and a structure analogous to that described in figure 3 .
  • the tightness between the upstream zone Z1 and the downstream zone Z2, on the other hand, is obtained by an O-ring T placed at the periphery of the insertable portion 23 of the plug 20, below the bore 26.
  • the orifice or bore 26 may be provided in the upper flange (17) of the separating element (15).
  • the separating device 10 is not placed inside a specific tubular duct but directly integrated with the motor's DC cover.
  • the oil filling chamber is then constituted by the body 1 of the cylinder head of the engine and the valve cover CC.
  • the cylinder head cover CC has a circular opening 12 surmounted by a tubular portion of revolution and axis A intended to receive the filler cap 20.
  • This tubular portion 11a constitutes the upper end 11a of the filling chamber.
  • the separating device 10 has, as in the previously described embodiments, a plug 20 with a flattened gripping portion 22 and an insertable portion 23 which penetrates into the filling aperture 12.
  • the plug 20 is in section in the general form of a relatively flattened T.
  • liquids such as water or oil are separated in the downstream zone Z2 and collected in the manifold 33.
  • the device 10 always has a separating element 15 connected to the plug 20.
  • This separating element 15 is here made integral rotation of the plug 20.
  • the filter medium 16 has a coalescent function for the liquid particles such as oil and water, and a filtration function of solid particles such as soot.
  • the outlet cannula 21 is made in the breech cover CC.
  • the upper flange 17 separates in its equilibrium state the upstream zone Z1 of the outlet orifice S.
  • the upper flange 17 is to be moved upwards when there is an overpressure in the casing and when the gases present in the body 1 of the cylinder head are at a sufficiently high pressure to lift the separating element 15 and this against the force exerted by the spring R.
  • the outlet port S is then directly accessible and the gases can then be directly routed to the outlet cannula 21 which is connected to the air intake of the internal combustion engine.
  • the spring R is disposed between the gripping part 22 and the separating element 15 so that the separating element 15 naturally obturates the access from the bottom to the outlet port S leading to the outlet pipe or cannula 21.
  • This closure by the upper flange 17 therefore forces the gases arriving through the lower end of the body 1 of the cylinder head to pass directly through the filter media 16 to then arrive in the downstream zone Z2 through which the filtered gases will then be directly routed to the air intake of the internal combustion engine via the outlet cannula 21.
  • the separating element 15 can move in translation relative to the plug 20 between a position distant from the upper end 11a of the filling chamber and a position close to the upper end 11a.
  • the fixing of the separating element 15 can be done using elastic pins 46 or similar retaining elements provided at the lower end of the gripping portion 23 of the plug 20. These elastic pins 46 form a defining stop for the separating element 15 a low or remote position relative to the cap 20. The lugs or radial projections of the upper flange 17 inward then bear against this stop.
  • the outer edge of the upper flange 17 rests on a transverse wall 47 so that only the downstream zone Z2 communicates directly with the outlet orifice S, this downstream zone Z2 being situated at the level of the upper end 11a. of the filling chamber.
  • the upper flange 17 of the separating element 15 is biased by the spring R downwards to allow the passage of the purified gas GP via the filter medium 16 to the outlet orifice S.
  • This derivation can also be carried out when the separating element 15 or more exactly its filter medium 16 is fouled and can no longer ensure proper separation.
  • the casing gases G can no longer be filtered and pass through the filter element 16, so that the overpressure of the gases in the upstream zone Z1 will cause the separation element 15 to rise. against the force exerted by the spring R so as to put in direct communication the inlet pipe 14 with the outlet port S gas.
  • One of the advantages of the invention is to provide an effective separation of the crankcase gases closer to the engine, with the ability to easily control the condition of the filter media and if necessary replace it.
  • the size of the separating device 10 is furthermore greatly reduced since separation is effected in the oil filling line, which is an already existing element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
EP20090157605 2008-04-09 2009-04-08 Ölnebelabscheidevorrichtung mit einem Filtermedium zur Kurbelraumentlüftung. Not-in-force EP2108790B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0852368A FR2929985B1 (fr) 2008-04-09 2008-04-09 Dispositif separateur dote d'un media filtrant, destine a separer l'huile des gaz de carter d'un moteur a combustion interne

Publications (3)

Publication Number Publication Date
EP2108790A2 true EP2108790A2 (de) 2009-10-14
EP2108790A3 EP2108790A3 (de) 2010-11-24
EP2108790B1 EP2108790B1 (de) 2013-02-27

Family

ID=40154511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090157605 Not-in-force EP2108790B1 (de) 2008-04-09 2009-04-08 Ölnebelabscheidevorrichtung mit einem Filtermedium zur Kurbelraumentlüftung.

Country Status (2)

Country Link
EP (1) EP2108790B1 (de)
FR (1) FR2929985B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013141825A1 (en) * 2012-03-20 2013-09-26 Turk Traktor Ve Ziraat Makineleri A.S. Engine ventilation filter
FR3092360A1 (fr) 2019-02-05 2020-08-07 Sogefi Filtration Dispositif séparateur doté d’au moins un cyclone et procédé, pour séparer l’huile des gaz de carter d’un moteur à combustion interne
EP4151301A1 (de) * 2017-05-08 2023-03-22 Donaldson Company, Inc. Ölkoaleszierende entlüftungsanordnung

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Publication number Priority date Publication date Assignee Title
WO2000071862A1 (de) 1999-05-20 2000-11-30 Filterwerk Mann+Hummel Gmbh Flüssigkeitsabscheider, insbesondere für die reinigung von kurbelgehäusegasen, mit abscheidepatrone
US20060081229A1 (en) 2004-10-19 2006-04-20 Gronberg Philip F Combined filter and fill tube

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GB1395744A (en) * 1972-05-22 1975-05-29 Automotive Proeucts Ltd Oil filler cap
US4401093A (en) * 1982-06-09 1983-08-30 Ford Motor Company Oil fill/air breather cap with integral oil separator
DE3914759A1 (de) * 1989-05-05 1990-11-08 Mann & Hummel Filter Einfuelloeffnung fuer das einfuellen von schmieroel in eine brennkraftmaschine
DE29810402U1 (de) * 1998-06-10 1998-09-10 Hengst Walter Gmbh & Co Kg Vorrichtung zur Ölrückführung von einem Ölabscheider in das Kurbelgehäuse einer Verbrennungskraftmaschine
FR2906564B1 (fr) * 2006-09-28 2012-02-24 Filtrauto Dispositif de separation de certaines matieres produites par un moteur a combustion interne

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000071862A1 (de) 1999-05-20 2000-11-30 Filterwerk Mann+Hummel Gmbh Flüssigkeitsabscheider, insbesondere für die reinigung von kurbelgehäusegasen, mit abscheidepatrone
US20060081229A1 (en) 2004-10-19 2006-04-20 Gronberg Philip F Combined filter and fill tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013141825A1 (en) * 2012-03-20 2013-09-26 Turk Traktor Ve Ziraat Makineleri A.S. Engine ventilation filter
EP4151301A1 (de) * 2017-05-08 2023-03-22 Donaldson Company, Inc. Ölkoaleszierende entlüftungsanordnung
FR3092360A1 (fr) 2019-02-05 2020-08-07 Sogefi Filtration Dispositif séparateur doté d’au moins un cyclone et procédé, pour séparer l’huile des gaz de carter d’un moteur à combustion interne

Also Published As

Publication number Publication date
EP2108790B1 (de) 2013-02-27
FR2929985A1 (fr) 2009-10-16
EP2108790A3 (de) 2010-11-24
FR2929985B1 (fr) 2012-12-28

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